贻贝(Mytilus edulis Linnaeus)唇瓣的扫描电镜观察

本文运用扫描电子显微镜技术研究了贻贝唇瓣的形态结，结果表明，贻贝唇瓣外部形态呈羽毛状，分为光滑面和皱褶面；褶皱面表面被覆浓密纤毛，分有沟嵴和无嵴两部分，界限明显，光滑面纤毛较少，呈簇状，分布不均，在褶皱面中央分界处和光滑面的一侧，有大量球状突起，为杯状细胞所在，纤毛和粘液在食物分拣和运输中起重要作用。     

引入差比关系法分析西北太平洋TOPEX/POSEIDON卫星高度计测高数据

TOPEX/POSEIDON(T/P)卫星高度计数据信息中存在周期成分混淆问题.对其中的一类混淆引入差比关系方法对混淆的分潮进行分离.卫星轨道交叉点资料包括升轨和降轨资料,资料量比沿轨点资料多1倍,经分析发现:在已有为期6a多的观测资料时间序列中,在沿轨处混淆的分潮如K₁和SSA在交叉点处不再混淆,可以直接分离.因此首先对交叉点资料进行调和分析.然后由交叉点的分析结果得到分潮间的差比关系,处理到相近的沿轨点处,从而得到沿轨点的调和常数.用引入差比关系方法,对西北太平洋海区6a多的T/P卫星高度计资料进行了潮汐分析,并与沿岸及岛屿验潮站资料进行了比较,所得结果较满意.     

A Preliminary Study of Quantitative Distribution of Benthic Animals in the East China Sea Continental Shelf and Its Adiacent Waters

In October and November of 1977 and September and October of 1978,a quantitative survey of benthic animals was conducted in the East China Sea Continental Shelf and its adjacent waters(26°00'-34°00'N,124°00'-129°00'E,water depth 39-1550m),where 307 stations were dredged and 1200 samples collected.     

黄河水中胱氨酸对铅(Ⅱ)与悬浮粒子相互作用的影响

研究了黄河水中胱氨酸对铅(Ⅱ)与悬浮粒子相互作用的离子交换率E(%)-pH关系曲线的影响.结果表明:(1)2.0 u mol·L-1 的胱氨酸降低了离子交换率E(%);(2)与未加有机物相比"S型曲线"左移0.95个pH单位;(3)随着胱氨酸浓度的增加,离子交换率提高.     

海带中细胞激动素的纯化分离方法

海带样品于 2 0 0 1年采自青岛太平角海湾 ,用三种不同方法处理样品 ,通过对实验方法及条件的筛选 ,确立了提取、纯化和分离海带中细胞激动素的方法步骤和流程。结果表明 ,最佳方法的基本步骤为 :( 1 )用甲醇∶水∶醋酸 ( 70∶ 30∶ 3,V/V/V)从海带组织中提取出细胞激动素 ,再用PVPP柱去除提取液中的酚类和其他杂质 ;( 2 )将提取液通过连在一起的PVPP柱、DEAE柱和C1 8柱 ,以纯化样品并同时从自由基、核苷、核苷酸和葡糖苷型细胞激动素混合物中分离出核苷酸型细胞激动素 ;( 3)用接有氨基柱的正相液相色谱进一步将葡糖苷型细胞激动素分离出来 ;( 4 )用C1 8液相色谱柱分离其他各种细胞激动素     

普里兹湾陆缘水边界的变化

利用１９９８年１１月－１９９９年２月中国第１５次南极考察资料,讨论了普里兹湾附近陆缘水边界（ＣＷＢ）两侧的水团分布,以及ＣＷＢ的中心位置、锋面宽度、锋面强度、锋面的垂直深度和垂直厚度等物理特征的空间变化。并与１９９２年１２月－１９９３年２月中国第９次南极考察资料进行了比较,说明了ＣＷＢ的时间２变化。同时,还进一步分析了ＣＷＢ两侧海水运动的各向异性,以及动力高度场的形势,指出了动力高度槽,ＣＷＢ锋面     

中国对虾配合饲料限制性营养成分分析

以最常用的18种原料为对象,用线性规划的方法对华东沿海中国对虾人工饲料配制过程中的限制营养成分进行了分析。结果表明,粗脂肪、粗灰分、磷、精氨酸、赖氨酸是限制性营养成分,粗纤维和蛋氨酸在以植物性蛋白质为主的配方中是限制性营养成分。因此,在中国对虾人工饵料配方设计中,应注意选用脱脂原料,增加矿物质添加剂中磷的含量以及采用富含精氨酸和赖氨酸的原料。     

Prediction of Load Carrying Capacity of Corroded Reinforced Concrete Beam

A novel method for prediction of the load carrying capacity of a corroded reinforced concrete beam (CRCB) is presented in the paper. Nine reinforced concrete beams, which had been working in an aggressive environment for more than 10 years, were tested in the laboratory. Comprehensive tests, including flexural test, strength test for corroded concrete and rusty rebar, and pullout test for bond strength between concrete and rebar, were condueted. The flexural test results of CRCBs reveal that the distribution of surface cracks on the beams shows a fractal behavior. The relationship between the fractal dimensions and mechanical properties of CRCBs is then studied. A prediction model based on artificial neural network (ANN) is established by the use of the fractal dimension as the corrosion index, together with the basic intbrmation of the beam. The validity of the prediction model is demonstrated through the experimental data, and satisfactory resuits are achieved.     

Spatial and temporal variability of heat content above the thermocline in the tropical Pacific Ocean

Abstract-Heat content of the upper layer above the 20℃ isotherm in the tropical Pacific Ocean isestimated by using the sea temperature data set with a resolution 2°latitude×5°longitude (1980～1993)for the water depths (every 10 m) from 0 m to 400 m, and its temporal and spatial variabilities are an-alyzed. (1) The temporal variability indicates that the total heat in the upper layer of the equatorial Pa-cific Ocean is charcterized by the interannual variability. The time series of the equatorial heat anomaly5 months lead that of the El Nino index at the best positive lag correlation between the two, and theformer 13 months lag behind the latter at their best negative lag correlation. Therefore the equatorialheat content can be used as a better predictor than the El Nino index for a warm or cold event. In addi-tion, it is also found that less heat anomaly in the equator corresponds to the stronger warm events inthe period (1980～1993) and much more heat was accumulated in the 4 years including 1992/1     

南海北部—观测点内潮特征的初步分析

采用功率谱分析、调和分析等方法，对南海北部－观测点连续９ｄ（１９８８年５月８—１６日）的温度。盐度和海流及跨越该期间较长的（１９８８年４月２４日－７月２２日）潮位资料进行了分析研究。结果表明，观测点存在着一种内潮现象，其波动的周期在２４ｈ左右，它传播的方向大体是偏北。